93 lines
2.0 KiB
C++
93 lines
2.0 KiB
C++
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/*
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* Copyright 2004, Jérôme Duval, jerome.duval@free.fr.
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* Copyright 2010, Oliver Tappe <zooey@hirschkaefer.de>
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* All rights reserved. Distributed under the terms of the MIT License.
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*/
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#include <File.h>
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#include <FindDirectory.h>
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#include <Message.h>
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#include <OS.h>
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#include <Path.h>
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#include <syscalls.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static char* program;
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void
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setRealTimeClockIsGMT(BPath path)
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{
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path.Append("RTC_time_settings");
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BFile file;
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status_t status = file.SetTo(path.Path(), B_READ_ONLY);
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if (status != B_OK) {
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fprintf(stderr, "%s: can't open RTC settings file\n", program);
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return;
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}
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char buffer[10];
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ssize_t bytesRead = file.Read(buffer, sizeof(buffer));
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if (bytesRead < 0) {
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fprintf(stderr, "%s: unable to read RTC settings file\n", program);
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return;
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}
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bool isGMT = strncmp(buffer, "local", 5) != 0;
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_kern_set_real_time_clock_is_gmt(isGMT);
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printf("RTC stores %s time.\n", isGMT ? "GMT" : "local" );
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}
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void
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setTimeZoneOffset(BPath path)
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{
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path.Append("Time settings");
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BFile file;
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status_t status = file.SetTo(path.Path(), B_READ_ONLY);
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if (status != B_OK) {
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fprintf(stderr, "%s: can't open Time settings file\n", program);
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return;
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}
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BMessage settings;
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status = settings.Unflatten(&file);
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if (status != B_OK) {
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fprintf(stderr, "%s: unable to parse Time settings file\n", program);
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return;
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}
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int32 timeZoneOffset;
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if (settings.FindInt32("offset", &timeZoneOffset) != B_OK) {
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fprintf(stderr, "%s: no timezone offset found\n", program);
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return;
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}
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_kern_set_timezone(timeZoneOffset, false);
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printf("timezone offset is %ld seconds from GMT.\n", timeZoneOffset);
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}
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int
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main(int argc, char **argv)
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{
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program = argv[0];
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BPath path;
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status_t status = find_directory(B_USER_SETTINGS_DIRECTORY, &path);
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if (status != B_OK) {
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fprintf(stderr, "%s: can't find settings directory\n", program);
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return EXIT_FAILURE;
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}
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setRealTimeClockIsGMT(path);
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setTimeZoneOffset(path);
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return 0;
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}
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